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Diffstat (limited to 'arch/mips/txx9/rbtx4938/setup.c')
-rw-r--r--arch/mips/txx9/rbtx4938/setup.c412
1 files changed, 412 insertions, 0 deletions
diff --git a/arch/mips/txx9/rbtx4938/setup.c b/arch/mips/txx9/rbtx4938/setup.c
new file mode 100644
index 00000000000..6c2b99bb8af
--- /dev/null
+++ b/arch/mips/txx9/rbtx4938/setup.c
@@ -0,0 +1,412 @@
+/*
+ * Setup pointers to hardware-dependent routines.
+ * Copyright (C) 2000-2001 Toshiba Corporation
+ *
+ * 2003-2005 (c) MontaVista Software, Inc. This file is licensed under the
+ * terms of the GNU General Public License version 2. This program is
+ * licensed "as is" without any warranty of any kind, whether express
+ * or implied.
+ *
+ * Support for TX4938 in 2.6 - Manish Lachwani (mlachwani@mvista.com)
+ */
+#include <linux/init.h>
+#include <linux/types.h>
+#include <linux/ioport.h>
+#include <linux/delay.h>
+#include <linux/interrupt.h>
+#include <linux/console.h>
+#include <linux/pm.h>
+#include <linux/platform_device.h>
+#include <linux/gpio.h>
+
+#include <asm/reboot.h>
+#include <asm/io.h>
+#include <asm/txx9/generic.h>
+#include <asm/txx9/pci.h>
+#include <asm/txx9/rbtx4938.h>
+#include <linux/spi/spi.h>
+#include <asm/txx9/spi.h>
+#include <asm/txx9pio.h>
+
+static void rbtx4938_machine_halt(void)
+{
+ printk(KERN_NOTICE "System Halted\n");
+ local_irq_disable();
+
+ while (1)
+ __asm__(".set\tmips3\n\t"
+ "wait\n\t"
+ ".set\tmips0");
+}
+
+static void rbtx4938_machine_power_off(void)
+{
+ rbtx4938_machine_halt();
+ /* no return */
+}
+
+static void rbtx4938_machine_restart(char *command)
+{
+ local_irq_disable();
+
+ printk("Rebooting...");
+ writeb(1, rbtx4938_softresetlock_addr);
+ writeb(1, rbtx4938_sfvol_addr);
+ writeb(1, rbtx4938_softreset_addr);
+ while(1)
+ ;
+}
+
+static void __init rbtx4938_pci_setup(void)
+{
+#ifdef CONFIG_PCI
+ int extarb = !(__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCIARB);
+ struct pci_controller *c = &txx9_primary_pcic;
+
+ register_pci_controller(c);
+
+ if (__raw_readq(&tx4938_ccfgptr->ccfg) & TX4938_CCFG_PCI66)
+ txx9_pci_option =
+ (txx9_pci_option & ~TXX9_PCI_OPT_CLK_MASK) |
+ TXX9_PCI_OPT_CLK_66; /* already configured */
+
+ /* Reset PCI Bus */
+ writeb(0, rbtx4938_pcireset_addr);
+ /* Reset PCIC */
+ txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+ if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
+ TXX9_PCI_OPT_CLK_66)
+ tx4938_pciclk66_setup();
+ mdelay(10);
+ /* clear PCIC reset */
+ txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+ writeb(1, rbtx4938_pcireset_addr);
+ iob();
+
+ tx4938_report_pciclk();
+ tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
+ if ((txx9_pci_option & TXX9_PCI_OPT_CLK_MASK) ==
+ TXX9_PCI_OPT_CLK_AUTO &&
+ txx9_pci66_check(c, 0, 0)) {
+ /* Reset PCI Bus */
+ writeb(0, rbtx4938_pcireset_addr);
+ /* Reset PCIC */
+ txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+ tx4938_pciclk66_setup();
+ mdelay(10);
+ /* clear PCIC reset */
+ txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIRST);
+ writeb(1, rbtx4938_pcireset_addr);
+ iob();
+ /* Reinitialize PCIC */
+ tx4938_report_pciclk();
+ tx4927_pcic_setup(tx4938_pcicptr, c, extarb);
+ }
+
+ if (__raw_readq(&tx4938_ccfgptr->pcfg) &
+ (TX4938_PCFG_ETH0_SEL|TX4938_PCFG_ETH1_SEL)) {
+ /* Reset PCIC1 */
+ txx9_set64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIC1RST);
+ /* PCI1DMD==0 => PCI1CLK==GBUSCLK/2 => PCI66 */
+ if (!(__raw_readq(&tx4938_ccfgptr->ccfg)
+ & TX4938_CCFG_PCI1DMD))
+ tx4938_ccfg_set(TX4938_CCFG_PCI1_66);
+ mdelay(10);
+ /* clear PCIC1 reset */
+ txx9_clear64(&tx4938_ccfgptr->clkctr, TX4938_CLKCTR_PCIC1RST);
+ tx4938_report_pci1clk();
+
+ /* mem:64K(max), io:64K(max) (enough for ETH0,ETH1) */
+ c = txx9_alloc_pci_controller(NULL, 0, 0x10000, 0, 0x10000);
+ register_pci_controller(c);
+ tx4927_pcic_setup(tx4938_pcic1ptr, c, 0);
+ }
+#endif /* CONFIG_PCI */
+}
+
+/* SPI support */
+
+/* chip select for SPI devices */
+#define SEEPROM1_CS 7 /* PIO7 */
+#define SEEPROM2_CS 0 /* IOC */
+#define SEEPROM3_CS 1 /* IOC */
+#define SRTC_CS 2 /* IOC */
+
+static int __init rbtx4938_ethaddr_init(void)
+{
+#ifdef CONFIG_PCI
+ unsigned char dat[17];
+ unsigned char sum;
+ int i;
+
+ /* 0-3: "MAC\0", 4-9:eth0, 10-15:eth1, 16:sum */
+ if (spi_eeprom_read(SEEPROM1_CS, 0, dat, sizeof(dat))) {
+ printk(KERN_ERR "seeprom: read error.\n");
+ return -ENODEV;
+ } else {
+ if (strcmp(dat, "MAC") != 0)
+ printk(KERN_WARNING "seeprom: bad signature.\n");
+ for (i = 0, sum = 0; i < sizeof(dat); i++)
+ sum += dat[i];
+ if (sum)
+ printk(KERN_WARNING "seeprom: bad checksum.\n");
+ }
+ for (i = 0; i < 2; i++) {
+ unsigned int id =
+ TXX9_IRQ_BASE + (i ? TX4938_IR_ETH1 : TX4938_IR_ETH0);
+ struct platform_device *pdev;
+ if (!(__raw_readq(&tx4938_ccfgptr->pcfg) &
+ (i ? TX4938_PCFG_ETH1_SEL : TX4938_PCFG_ETH0_SEL)))
+ continue;
+ pdev = platform_device_alloc("tc35815-mac", id);
+ if (!pdev ||
+ platform_device_add_data(pdev, &dat[4 + 6 * i], 6) ||
+ platform_device_add(pdev))
+ platform_device_put(pdev);
+ }
+#endif /* CONFIG_PCI */
+ return 0;
+}
+
+static void __init rbtx4938_spi_setup(void)
+{
+ /* set SPI_SEL */
+ txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_SPI_SEL);
+}
+
+static struct resource rbtx4938_fpga_resource;
+
+static void __init rbtx4938_time_init(void)
+{
+ tx4938_time_init(0);
+}
+
+static void __init rbtx4938_mem_setup(void)
+{
+ unsigned long long pcfg;
+ char *argptr;
+
+ if (txx9_master_clock == 0)
+ txx9_master_clock = 25000000; /* 25MHz */
+
+ tx4938_setup();
+
+#ifdef CONFIG_PCI
+ txx9_alloc_pci_controller(&txx9_primary_pcic, 0, 0, 0, 0);
+#else
+ set_io_port_base(RBTX4938_ETHER_BASE);
+#endif
+
+ tx4938_setup_serial();
+#ifdef CONFIG_SERIAL_TXX9_CONSOLE
+ argptr = prom_getcmdline();
+ if (strstr(argptr, "console=") == NULL) {
+ strcat(argptr, " console=ttyS0,38400");
+ }
+#endif
+
+#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_PIO58_61
+ printk("PIOSEL: disabling both ata and nand selection\n");
+ local_irq_disable();
+ txx9_clear64(&tx4938_ccfgptr->pcfg,
+ TX4938_PCFG_NDF_SEL | TX4938_PCFG_ATA_SEL);
+#endif
+
+#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_NAND
+ printk("PIOSEL: enabling nand selection\n");
+ txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_NDF_SEL);
+ txx9_clear64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_ATA_SEL);
+#endif
+
+#ifdef CONFIG_TOSHIBA_RBTX4938_MPLEX_ATA
+ printk("PIOSEL: enabling ata selection\n");
+ txx9_set64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_ATA_SEL);
+ txx9_clear64(&tx4938_ccfgptr->pcfg, TX4938_PCFG_NDF_SEL);
+#endif
+
+#ifdef CONFIG_IP_PNP
+ argptr = prom_getcmdline();
+ if (strstr(argptr, "ip=") == NULL) {
+ strcat(argptr, " ip=any");
+ }
+#endif
+
+
+#ifdef CONFIG_FB
+ {
+ conswitchp = &dummy_con;
+ }
+#endif
+
+ rbtx4938_spi_setup();
+ pcfg = ____raw_readq(&tx4938_ccfgptr->pcfg); /* updated */
+ /* fixup piosel */
+ if ((pcfg & (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) ==
+ TX4938_PCFG_ATA_SEL)
+ writeb((readb(rbtx4938_piosel_addr) & 0x03) | 0x04,
+ rbtx4938_piosel_addr);
+ else if ((pcfg & (TX4938_PCFG_ATA_SEL | TX4938_PCFG_NDF_SEL)) ==
+ TX4938_PCFG_NDF_SEL)
+ writeb((readb(rbtx4938_piosel_addr) & 0x03) | 0x08,
+ rbtx4938_piosel_addr);
+ else
+ writeb(readb(rbtx4938_piosel_addr) & ~(0x08 | 0x04),
+ rbtx4938_piosel_addr);
+
+ rbtx4938_fpga_resource.name = "FPGA Registers";
+ rbtx4938_fpga_resource.start = CPHYSADDR(RBTX4938_FPGA_REG_ADDR);
+ rbtx4938_fpga_resource.end = CPHYSADDR(RBTX4938_FPGA_REG_ADDR) + 0xffff;
+ rbtx4938_fpga_resource.flags = IORESOURCE_MEM | IORESOURCE_BUSY;
+ if (request_resource(&txx9_ce_res[2], &rbtx4938_fpga_resource))
+ printk("request resource for fpga failed\n");
+
+ _machine_restart = rbtx4938_machine_restart;
+ _machine_halt = rbtx4938_machine_halt;
+ pm_power_off = rbtx4938_machine_power_off;
+
+ writeb(0xff, rbtx4938_led_addr);
+ printk(KERN_INFO "RBTX4938 --- FPGA(Rev %02x) DIPSW:%02x,%02x\n",
+ readb(rbtx4938_fpga_rev_addr),
+ readb(rbtx4938_dipsw_addr), readb(rbtx4938_bdipsw_addr));
+}
+
+static int __init rbtx4938_ne_init(void)
+{
+ struct resource res[] = {
+ {
+ .start = RBTX4938_RTL_8019_BASE,
+ .end = RBTX4938_RTL_8019_BASE + 0x20 - 1,
+ .flags = IORESOURCE_IO,
+ }, {
+ .start = RBTX4938_RTL_8019_IRQ,
+ .flags = IORESOURCE_IRQ,
+ }
+ };
+ struct platform_device *dev =
+ platform_device_register_simple("ne", -1,
+ res, ARRAY_SIZE(res));
+ return IS_ERR(dev) ? PTR_ERR(dev) : 0;
+}
+
+static DEFINE_SPINLOCK(rbtx4938_spi_gpio_lock);
+
+static void rbtx4938_spi_gpio_set(struct gpio_chip *chip, unsigned int offset,
+ int value)
+{
+ u8 val;
+ unsigned long flags;
+ spin_lock_irqsave(&rbtx4938_spi_gpio_lock, flags);
+ val = readb(rbtx4938_spics_addr);
+ if (value)
+ val |= 1 << offset;
+ else
+ val &= ~(1 << offset);
+ writeb(val, rbtx4938_spics_addr);
+ mmiowb();
+ spin_unlock_irqrestore(&rbtx4938_spi_gpio_lock, flags);
+}
+
+static int rbtx4938_spi_gpio_dir_out(struct gpio_chip *chip,
+ unsigned int offset, int value)
+{
+ rbtx4938_spi_gpio_set(chip, offset, value);
+ return 0;
+}
+
+static struct gpio_chip rbtx4938_spi_gpio_chip = {
+ .set = rbtx4938_spi_gpio_set,
+ .direction_output = rbtx4938_spi_gpio_dir_out,
+ .label = "RBTX4938-SPICS",
+ .base = 16,
+ .ngpio = 3,
+};
+
+/* SPI support */
+
+static void __init txx9_spi_init(unsigned long base, int irq)
+{
+ struct resource res[] = {
+ {
+ .start = base,
+ .end = base + 0x20 - 1,
+ .flags = IORESOURCE_MEM,
+ }, {
+ .start = irq,
+ .flags = IORESOURCE_IRQ,
+ },
+ };
+ platform_device_register_simple("spi_txx9", 0,
+ res, ARRAY_SIZE(res));
+}
+
+static int __init rbtx4938_spi_init(void)
+{
+ struct spi_board_info srtc_info = {
+ .modalias = "rtc-rs5c348",
+ .max_speed_hz = 1000000, /* 1.0Mbps @ Vdd 2.0V */
+ .bus_num = 0,
+ .chip_select = 16 + SRTC_CS,
+ /* Mode 1 (High-Active, Shift-Then-Sample), High Avtive CS */
+ .mode = SPI_MODE_1 | SPI_CS_HIGH,
+ };
+ spi_register_board_info(&srtc_info, 1);
+ spi_eeprom_register(SEEPROM1_CS);
+ spi_eeprom_register(16 + SEEPROM2_CS);
+ spi_eeprom_register(16 + SEEPROM3_CS);
+ gpio_request(16 + SRTC_CS, "rtc-rs5c348");
+ gpio_direction_output(16 + SRTC_CS, 0);
+ gpio_request(SEEPROM1_CS, "seeprom1");
+ gpio_direction_output(SEEPROM1_CS, 1);
+ gpio_request(16 + SEEPROM2_CS, "seeprom2");
+ gpio_direction_output(16 + SEEPROM2_CS, 1);
+ gpio_request(16 + SEEPROM3_CS, "seeprom3");
+ gpio_direction_output(16 + SEEPROM3_CS, 1);
+ txx9_spi_init(TX4938_SPI_REG & 0xfffffffffULL, RBTX4938_IRQ_IRC_SPI);
+ return 0;
+}
+
+static void __init rbtx4938_arch_init(void)
+{
+ gpiochip_add(&rbtx4938_spi_gpio_chip);
+ rbtx4938_pci_setup();
+ rbtx4938_spi_init();
+}
+
+/* Watchdog support */
+
+static int __init txx9_wdt_init(unsigned long base)
+{
+ struct resource res = {
+ .start = base,
+ .end = base + 0x100 - 1,
+ .flags = IORESOURCE_MEM,
+ };
+ struct platform_device *dev =
+ platform_device_register_simple("txx9wdt", -1, &res, 1);
+ return IS_ERR(dev) ? PTR_ERR(dev) : 0;
+}
+
+static int __init rbtx4938_wdt_init(void)
+{
+ return txx9_wdt_init(TX4938_TMR_REG(2) & 0xfffffffffULL);
+}
+
+static void __init rbtx4938_device_init(void)
+{
+ rbtx4938_ethaddr_init();
+ rbtx4938_ne_init();
+ rbtx4938_wdt_init();
+}
+
+struct txx9_board_vec rbtx4938_vec __initdata = {
+ .system = "Toshiba RBTX4938",
+ .prom_init = rbtx4938_prom_init,
+ .mem_setup = rbtx4938_mem_setup,
+ .irq_setup = rbtx4938_irq_setup,
+ .time_init = rbtx4938_time_init,
+ .device_init = rbtx4938_device_init,
+ .arch_init = rbtx4938_arch_init,
+#ifdef CONFIG_PCI
+ .pci_map_irq = rbtx4938_pci_map_irq,
+#endif
+};